Today, thermostats play an important role in increasing engine combustion efficiency and reducing emissions. Thermostats were originally incorporated to speed engine warm-up and reduce cylinder ring wear. More information: have been an important component in automotive internal combustion engines for almost a century. We cannot accept liability for consequential loss or damage which is claimed to have resulted from the use of one of our products. The guarantee is limited to the replacement of the faulty part we cannot extend the guarantee to cover defects caused by misuse, neglect, accident or wear and tear. Perform the preventive thermostats maintenance every 30.000 Km.Īll MTE-THOMSON products are guaranteed for 01(one) year against defects from faulty materials or fabrication.Any reduction in the coolant level may indicate a leaking in the cooling system.Do not fill the coolant reservoir only with plain water, because this will dilute the coolant concentration.Always use the specified coolant and the correct rate for your vehicle.Check the coolant level weekly, with the cold engine.At any evidence of excessive temperature, park the vehicle in a safe place and turn off the engine immediately, otherwise, you may damage the engine.Never perform maintenance repair while the cooling system is still hot.Always check the correct thermostat for each vehicle model.Do not leave the vehicle without a thermostat, otherwise, the engine will always operate cold, causing failures, excessive fuel consumption, and increased emissions.Bleed the air (remove air bubbles) from the cooling system.Important actions when changing the Thermostat: A more detailed study, such as the assessment of the opening temperature, should be accomplished with specific equipment in the factory. Important: This test verifies only the valve’s operation. Note: the boiling temperature varies with altitude it will only boil at 100C at sea level After the liquid starts to boil, with for 5 minutes and, remove the thermostat and check if it is completely opened.Observe the thermostat operation, while using a thermometer and stirring the liquid for better temperature uniformity.(try do not allow the thermostat to touch the bottom of the container). Place the thermostat into a container or pan with coolant liquid and leave it in the stove in medium temperature.Closed: Causes the engine to overheat, cylinder’s head gasket burn out, warping the cylinder’s head, etc. ![]() Opened: High fuel consumption and emission, low power and torque.The thermostat opening temperature will be, give or take 2 degrees of the nominal temperature and, should be completely open after 15 to 20 degrees over the nominal temperature, at this point the thermostat must be at least 8mm open. Operating temperature depends on the car manufacturer’s specification, the opening temperature is usually found in the thermostat body. Reduce wear and extend the engine’s life.Keep the engine operating between the designed temperature limits.Allowed fast heating of the engine (the thermostat remains closed while the engine is cool).Generally near the engine and the upper hose that exits from the radiator. When the temperature increases, the wax melts and expands inside the thermo-element, pushing the piston outward, compressing the spring and opening the valve, which allows the passage of the coolant to the radiator. The thermostat uses a thermo-expansive wax that is calibrated accordingly to a specification. Used in the cooling systems of engines cooled by coolant liquid or air. Its function is to control the flow of the coolant fluid between the engine and the radiator.
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